New! Dark mode!

Browsing Pinside at night? Getting tired of all the white? Switch to dark mode using the button in the top right (or CTRL-B)!

(Topic ID: 274771)

Sound Worked Fine Then Started Lightly Crackling Before Going Out

By PinballGurus

83 days ago

Topic Stats

  • 8 posts
  • 3 Pinsiders participating
  • Latest reply 81 days ago by PinballGurus
  • No one calls this topic a favorite


Linked Games

Topic Gallery

There have been 5 images uploaded to this topic. (View topic image gallery).

C1F05826-3FFC-4719-A4DB-962684F17EB3 (resized).jpeg
BC7DDA90-C958-47D7-AEDC-7BD082845F0E (resized).jpeg
FE28E3E2-4BD7-4F24-B049-15B93D5FA800 (resized).jpeg
F92E42CF-7547-4346-8C2C-071D53930B3B (resized).jpeg
835EBB65-9C0C-4438-A7C9-521EE1B3ED59 (resized).jpeg

#1 83 days ago

Sound on machine was working fine and after about 45 minutes started cracking randomly before completely going out. I’m thinking this is likely a cold solder joint somewhere on the sound board but was hoping for a second opinion before going that route. The game had been sitting a long time and was covered in dust. The only other thing I can think of is a bad amp chip, but I’ve replaced them in the past only to have the issue reappear, which is why I’m thinking CSJ, maybe a capacitor on the sound board, so I was curious what others thought who have had this issue? Thanks in advance.

#2 83 days ago

Start with the basics. Make sure the wires from the speaker are all connected, same with the other end at the sound board. Adjust the volume up and down to make sure the volume potentiometer is good. Inspect the sound board too, like you said.

#3 83 days ago

Here’s a video of what the machine is doing and the sound issue. It didn’t crackle in this video before going out it just went out and started humming. The other day I was fixing a back slingshot and when I grounded the transistor the sound went out so I replaced the diode on the coil and the transistor and didn’t have any sound issues after that... then it started randomly turning off. Thanks for the suggestions.

#4 83 days ago

Potentiometer good.
Wires good.

Checking the board today for CSJ.

#5 82 days ago

Try making sure all the chips are seated properly. Sometimes even reseating them is good to do. Have you inspected the sound board?

#6 82 days ago

Well, you have a 5803 MPU interfaced to a WMS D-11581 sound board via a unique interface board. I’d begin by reseating ribbons. The D-11582 has two amps so this is unlikely to be an analog issue.

Grounding a coil drive transistor isn’t associated with the sound board in any way.

Chris Hibler - CARGPB #31
Http:// - The new place for pinball repair info

#7 81 days ago

Cold solder joint on the two amp chips. Fixed and working. Thanks.

#8 81 days ago
835EBB65-9C0C-4438-A7C9-521EE1B3ED59 (resized).jpegBC7DDA90-C958-47D7-AEDC-7BD082845F0E (resized).jpegC1F05826-3FFC-4719-A4DB-962684F17EB3 (resized).jpegF92E42CF-7547-4346-8C2C-071D53930B3B (resized).jpegFE28E3E2-4BD7-4F24-B049-15B93D5FA800 (resized).jpeg
Promoted items from the Pinside Marketplace
From: $ 18.00
Apparel - Men
Pinside Shop
$ 19.00
$ 50.00
From: $ 40.00
Cabinet - Other
Rock Custom Pinball
$ 137.00
From: $ 5.00
Cabinet - Other
Rock Custom Pinball
$ 10.00
Playfield - Protection
UpKick Pinball
$ 229.99
Lighting - Other
Lighted Pinball Mods
$ 90.00
Lighting - Under Cabinet
Rock Custom Pinball
$ 40.00
Playfield - Toys/Add-ons
UpKick Pinball
$ 24.00
Playfield - Other
Pinball Mod Co.
$ 48.00
Playfield - Plastics
€ 6.50
Flipper Parts
$ 79.99
Cabinet - Armor And Blades
PinGraffix Pinside Shop
$ 119.95
Playfield - Toys/Add-ons
$ 79.99
Cabinet - Armor And Blades
PinGraffix Pinside Shop
$ 24.25
Cabinet - Shooter Rods
The MOD Couple
$ 24.75
Playfield - Toys/Add-ons
The MOD Couple
From: $ 9.99
$ 20.00
Cabinet - Other
Filament Printing
$ 67.95
Cabinet - Shooter Rods
Super Skill Shot Shop
$ 10.00
Playfield - Other
Loop Combo Pinball
$ 18.95
$ 209.99
Lighting - Led

Hey there! Got a moment?

Great to see you're enjoying Pinside! Did you know Pinside is able to run thanks to donations from our visitors? Please donate to Pinside, support the site and get anext to your username to show for it! Donate to Pinside